From The New York Times, a fascinating report:
Mexico’s Sinaloa cartel is a complex, multi-billion-dollar business operating in more than a dozen countries.
And there is this piece of information that signals their adaptability:
Michael Braun, the former chief of operations for the D.E.A., told me a story about the construction of a high-tech fence along a stretch of border in Arizona. “They erect this fence,” he said, “only to go out there a few days later and discover that these guys have a catapult, and they’re flinging hundred-pound bales of marijuana over to the other side.” He paused and looked at me for a second. “A catapult,” he repeated. “We’ve got the best fence money can buy, and they counter us with a 2,500-year-old technology.”